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Finding the Fourth Proportional to 79,270.80, 118,877.40 and 39,814.80

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Solution

The fourth proportional to 79,270.80, 118,877.40 and 39,814.80 is: 59,707.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,270.80 : 118,877.40 = 39,814.80 : x
  2. Step 2: Convert to fraction form
    79,270.80/118,877.40 = 39,814.80/x
  3. Step 3: Cross multiply
    79,270.80x = 118,877.40 × 39,814.80
  4. Step 4: Simplify right side
    79,270.80x = 4,733,079,905.52
  5. Step 5: Solve for x
    x = 4,733,079,905.52/79,270.80
  6. Step 6: Final answer
    x = 59,707.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.